生理盐水冲洗提高多层CT门脉造影图像质量的临床研究
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肖 亮, 徐 克
螺旋CT;三维门脉造影;生理盐水冲洗;图像质量;最大密度投影法,肖亮,徐克，,肖亮,通讯作者：,Clinicalapplicationofnorm
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肖亮, 徐克，中国医科大学附属第一医院放射科 辽宁省沈阳市 110001
肖亮, 男, 1972-12-31生, 辽宁省沈阳市人, 汉族, 2004年中国医科大学博士研究生, 主治医师, 讲师, 主要从事血管疾病的诊断与介入治疗.
通讯作者：肖亮, 110001, 辽宁省沈阳市, 中国医科大学附属第一医院放射科. xiaoliang1972@yahoo.com.cn
电话: 024-23256666-6205 传真: 024-23252365
收稿日期: 2005-08-10 接受日期: 2005-08-26
Clinical application ofnormal saline flush in multi-detector CT photography on portal vein
Liang Xiao, Ke Xu
Liang Xiao, Ke Xu, Department of Radiology, the First Clinical Hospital of China Medical University, Shenyang 110001, Liaoning Province, China
Correspondence to: Liang Xiao, Department of Radiology, the First Clinical Hospital of China Medical University, Shenyang 110001, Liaoning Province, China. xiaoliang1972@yahoo.com.cn
Received: 2005-08-10 Accepted: 2005-08-26
Abstract
AIM: To evaluate the clinical application of normal saline flush technique in improving the three-dimensional image quality of multi-detector helical CT-photography obtained by maximum intensity projection (MIP).
METHODS: Fifty-eight patients were randomly divided into two groups. Patients in the two groups were both injected with 2.0 mL/kg contrast material (300 gI/L), and patients in group A were also treated with 30 mL saline flush (3 mL/s). The injection of the contrast material lasted 33 s in both groups. The scanning was performed 45 s after injection. The scanning started at the level of the diaphragm and covered the entire liver and spleen. The acquired raw data were reconstructed at an interval of 1 mm. The CT values of the right hepatic lobe (RHL), main portal vein (MPV), right portal vein (RPV), and abdominal aorta were assessed. MIP images of 3D-CTP were visually graded by the four point-scoring system.
RESULTS: The mean CT attenuation values of MPV, RPV, and RPV-RHL were higher in group A. The differences between the two groups were 25.0, 19 ......
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